Open-tlke gas heater



G. E. PICKUP OPEN FIRE GAS HEATER Filed July 27. 1923 36 6 W4 A fl m4 Patented Nov. 25, 1924.

UNITED STATES PATENT OFFICE.

GEORGE E. PICKUP, OF iIEWARK, onio, nssreivon TO THE! WE'HRLE COMPANY, or

NEWARK, 0810, A CORPORATION OF 61am dean-amt. GAS HEATER;

Application filed July T 0 all whom it may concern:

Be it known that I, GEORGE PIGKUP,: a citizen of the United States, residing at Newark; in the county of Licking; and State of Ohio, have invented a certain new and useful Open 'Fire Gas Heater, of which the following is a specification.

The invention pertains to gas heaters of the type embodying a plurality of heating elements or mantles arranged in front, of a fire-back and supported over a series of burner heads arranged to discharge into the mantles.

()ne object of the invention is to provide a heater embodying a novel and advantageous support for the mantles. V

A further object is to provide a novel support for the burner independently of the mantle support.

general object is to produce a heater which may be manufactured economically and which is efficient inoperation.

The objects of the invention thus generally stated,- together with ancillary ad vantages, are attained by the construction and arran ement illustrated in the accompanying rawings forming part hereof wherein, I

Figure 1 is; a fragmentary front elevati'onal view of the heater base from which the burner is suspended and upon which is mQllnted the mantle support. I Fig. 2 is a plan View of the parts shown in Fig. 1.

Fig. 3 is a vertical tran'svers' sectional view of the parts showing a fire-back in position upon the base within an enclosed wall structure, with a mantle on its support in front of the fire-back. j

Fig. 4 is a plan view of the mantle support detached.

The heater comprises, as shown, a base 5 in the form of a substantially rectangular frame made of cast metahthe central opening in the frame being shown at 6. This base frame is arranged to be supportedat its corners by means of suitable supporting legs (not shown).

Projecting inwardly from the inner edge of the opening 6 in the base frame are three apertured lugs, including a pair of end lugs and an intermediate lug 8. To the end lugs 7 is secured the burner of the heater, indicated generally by the numeral 9, and to the intermediate lugv 8" is securedthe means 27, 1923. Seriafl a... 654,064.

for supporting the mantle, indicated generally by the numeral 10 and shown detached in Fig. 4, j The burner 9 comprises a tubular body bent back upon itsel-fapproximately mid way between its ends to form a lower portion 9% and upper portion 9 The open end of the lower portion is shaped to pro- Vida a bell mouth 11 into which the gas is discharged under the control of a suitable valve 12 arranged in a nozzle 13 which communicates with a suitable source of gas sup ply. The upper portion 9 of the, burner has cast integral therewith a plurality of discharge nozZles or heads 14 having a plurality of jet openings 15 in their upper ends. These heads are shown herein as being rectangular in form and as arranged in a row in equidistantly spaced relation within the base frame opening 6. K L p p Near its opposite ends the upper portion 9 of the burner has a pair of lugs 16 projecting forwardly and having apertures adapted to register with the apertures in the rearwardly projecting lugs 7 on, the base frame. The parts may be suitably secured together as by means of bolts 17 As shown in Fig. 3;, the burner is supported in such position that its heads 14 are dis posed within the opening. in the base. frame with their upper surfaces substantially flush with the upper surface of the frame. It will also be observed from said Fig. 3 that the burner heads communicate with the upper tubular portion 9 of the burner through restricted assages 18.

One 0 the intermediate burnerlieads has a rearwar dly projecting lug 19 formed integral therewith, which is arranged to rest upon the base frame at the rear edgeof the opening 6. To position the lug so as to hold the burner against. endwise movement the base frame is provided with a substantially U-shaped rib 20 forming a forwardly opening socket 0r recess for the lug; It will thus be apparent that the burner is supported from the base frame at three points, two at the forward side and one at the rear side, centrally of the burner. v

The supporting means for the mantle comprises a flat bar 21, the forward edge of which is curved somewhat to conform to the curvature of the forward edge of the opening 6 in the base frame. The latter has a rabbet groove 22 adjacent said forward edge adapted to receive the forward edge portion of the bar, and the bar is adapted to be held in such groove by. means of a bolt 23 passing through the bar and the central lug 8 on the base frame. It will be apparent that because of the presence of the rabbet groove 22 the bar need be secured to the base frame at a single point only.

Extending rearwardly from the rear edge of the bar 21 is a plurality of fingers 24 preferably unconnected at their rear ends and spaced apart so that the distance between centers is substantially equal to the external diameter of the lower ends of the mantles, one of the latter being shown at 25 (Figs. 3 and 4). At their forward and rear ends these ngers 2& have raised projections 26 and 27 so arranged that the forward and rear projections on adjacent lingers outline in effect an annular recess adapted to receive the lower ends of the mantles, the upper surfaces of the fingers constituting the bottoms of the annular recesses. These surfaces are preferably disposed slightly above the upper surfaces of the burner heads so as to allow the free passage of an ample supply of air to support combustion. This flow of air is also facilitated by the use of the spaced fingers for supporting the mantles, since these fingers present a minimum degree of obstruction to the How of the air.

To hold the mantles against rotation upon their support, the bar 21 has formed thereon, near its rear edge and midway between the fingers 24, a plurality of upstanding projections 28 which are adapted to enter notches (not shown) in the lower forward sides of the mantles.

With my construction, to gain access to the burner heads lei for cleaning or other purposes, it is unnecessary to remove the burner which, it will be remembered, is connected with a gas supply line, since the mantles are supported independently of the burner. Thus it is only necessary to remove the mantles and their support, and in detaching the latter it is only necessary to remove one bolt 23. A further advantage in this method of supporting the mantles independently of the burner is that heat from the mantles is not readily conducted from the mantle support to the burner.

Also supported upon the base frame 5 rearwardly of the opening 6 therein is a firebacl: 29 formed of fire clay or other suitable and preferably refractory material so as to be adapted to throw forwardly the heat radiating from the mantles 25. Herein the lireback is made substantially. in U- form and to receive the lower end thereof the base frame is depressed to form a co=rrespondingly shaped recess 30, the forward ends of the side portions of said recess when it is desired terminating in recesses 31 adapted to receive the lower ends of posts or uprights (not shown) forming part of the wall structure. Near the upper forward edge of the rear wall of the fireback 29 I provide an overhanging ledge 32 apertured to receive upwardly projecting lugs 33 on the upper ends of the mantles 25. The mantles are thus held in place by the ledge 32 and the latter additionally serves to deflect the heat downwardly and forwardly. Preferably the mantles are spaced a slight distance from the front face of the tireback as by means of projections 34, the rear walls of the mantles throughout the greater portion of their lengths being flat while the lower ends of i the mantles are enlarged. somewhat. Thus their lower ends are made approximately circular in form, as sh wn in Figs. 3 and a, being enlarged rearwardly and contacting with the forward face of the fireback so as to space the lower ends of the mantles from the fireback. Air space is thus provided between the mantles and the fireback through which may flow air currents to support the combustion of the gases discharged into the mantles- The enlarged lower ends of the mantles also tend to reduce somewhat the heat imparted to the extreme lower ends of the mantles.

It will be apparent that I have produced a radiant gas heater of an advantageous character. The burner is suspended from the base frame by simple and yet effectual securing means; the mantles are mounted independently of the burner upon a support which insures a free flow of air and requires very little metal in its manufacture, and which can be quickly and easily removed to gain access to the burner heads when this is desirable; and the general construction and arrangement of the parts is such that the heater is capable of-operation with a high degree of efficiency.

I claim as my invention:

1. A gas heater comprising having a central elongated opening therein, a burner secured upon the underside of the frame, and a mantle support detachably secured upon the upper side of the frame so as to be removable independently of the burner.

2. A gas heater comprising a base frame, a burner having a tubular portion with a plurality of burner heads projecting upwardly therefrom, lugs formed integral with certain of the burner heads near opposite ends of said tubular portion, and lugs formed integral with the base frame to which the lugs on the burner heads'are adapted to be secured.

3. An open fire gas heater comprising a base having a rectangular opening therein, a pair of lugs extending rearwardly from the forward edge of said opening, and a a base frame burner having a pair of lugs extending forwardly from opposite end portions thereof and adapted to be secured to the lugs on the base f 'a-me.

l. VAn open firc heater comprising a base frame having a central elongated opening therein, a burner supported beneath said frame and having burner heads projecting through said opening, a plurality of mantles, and means for supporting the mant es comprising a bar arranged to lie fiat upon the base frame, and a lug formed integral with the base frame, said bar being adapted to be secured to said lug.

5. An open fire heater comprising a base frame having a central elongated opening therein, a burner supported beneath said frame and having burner heads projecting through said opening, a plurality of mantles, and means for supporting the mantles comprising a bar arranged to lie flat upon the base frame, and a lug formed integral with the base frame, said bar being adapted to be secured to said lug and said frame having a rabbet groove near the forward edge of said opening adapted to receive the forward edge of the bar.

6. An open fire heater comprising a base frame, and means for supporting the mantles of the heater comprising an elongated member arranged to lie fiat upon the base frame, and means including a single bolt for securing said. member to tne base frame.

7. An open fire heater comprising a base. frame, a burner having a three point suspension in said frame, and a mantle sup-- port detachably secured upon the upper side of the frame independently of the burner.

8. An open fire heater bination with a fireback and a plurality of mantles, a base frame adapted to support the fireback, and a support for the mantles detachably secured to the base frame, said support comprising a bar secured to the base frame at the forward edge of the opening therein, and a plurality of rearwardly extending fingers upon which said mantles are arranged to be seated.

9. An open fire gas heater having a mantle carrier comprising a bar having a plurality of fingers projecting from one edge thereof in spaced relation, the distance between said fingers between centers being substantially equal to the external diameter of the mantles at their lower ends.

10. An open fire gas heater having a mantle carrier comprising a bar having a plurality of fingers projecting from one edge thereof in spaced relation with-their free ends unconnected.

11. An open fire gas heater having, in combination, a burner head, a mantle, and means for supporting the mantle above the having, in com-- head comprising a pair of spaced lingers unconnected at one end and adapted to support the mantle at diametrically opposite sides thereof.

12. An open fire gas heater having a mantle carrier comprising a bar having a plurality of fingers projecting from one edge thereof in spaced relation, the distance between said fingers between centers being substantially equal to the external diameter the mantles at their lower ends, said fingers being shaped to hold the lower ends of the mantles against lateral sliding movement thereon.

13. An open fire heater comprising a base having an elongated central opening therein, a mantle support detachably secured upon the base and comprising a plurality of fingers extending in a front to rear direction and arranged in parallel spaced relation, said lingers having at their forward and rear ends upstanding projections and the projections on adjacent fingers being adapted to coact to form with the fingers recesses adapted to receive the lower ends of the mantles.

14:. An open fire heater comprising a base having an elongated central opening therein, a mantle support detachably secured upon the base and comprising a plurality of fingers extending in a front to rear direction and arranged in parallel spaced relation, the intermediate fingers being adapted to support adjacent sides of two adjoining mantles.

15. An open fire heater comprising a base having an elongated central opening therein, a mantle support detachably secured upon the base and comprising a plurality of fingers extending in a front to rear direction and arranged in parallel spaced relation, the intermediate fingers being adapted to support adjacent sides of two adjoining mantles, and means on the support between said fingers adapted to interengage with the lower ends of the mantles to prevent rotation thereof.

16. An open fire heater comprising a base having a central longitudinal opening therein, a fireback mounted on the base at the rear edge of said opening, a burner supported beneath the base and having discharge nozzles projecting into said opening, and mantles supported. upon the base above said nozzles, the lower ends of said mantles being enlarged rearwardly and engaging with the forward face of the fireback whereby to space the upper portions of the mantles from the fireback.

17 An open fire gas heater comprising, in combination, a base having an opening therein, a burner having discharge nozzles projecting upwardly into said opening, a fireback mounted on the base, a plurality of mantles, and a carrier for the mantles mounted upon the base'whereby to support said mantles above said nozzles, the lower ends of the mantles being enlarged and the rear faces of the mantles being substantially flat and spaced forwardly a short distance from the fireback by the lower ends of the mantle engaging with the firebaok.

18. An open-fire gas heater comprising a base frame having a central elongated opening therein, a burner supported below the frame and having burner heads projecting upwardly in said opening, a fir-aback seated. upon the frame at the rear edge of said opening, and amantle support detachably secured upon the upper side of the frame so as to be removable independently of the fire-- back to gain access tothe burner heads.

the said opening on theupper side of the frame, and other of the lugs, upon the opposite side of the said burner portion, being detachably secured to the under side of the frame. 7

In testimony whereof, I have hereunto affix-ed my signature.

GEORGE E. PICKU. 

